Twin anode X-ray source

Start-Up Procedure

1. Verify the main chamber base pressure is below 5x10^-9 mbar.
2. Turn on the X-ray source power supply and wait at least 10 minutes for electronics thermal stabilization.
3. Open the water cooling circuit and set the water pressure to aprox. 4.8 bars.

• Open drain valve first.
• Slowly open the source valve until the pressure reaches approximately 4.8 bars.

Water cooling

4. Verify all interlock LEDs are green.

Power supply, Interlocks

5. Start Avantage software. Select OK when a licence window appears.

6. Navigate to the "Instrument" tab (A). The Xray Gun Control panel will appear on the top.
   1. If the panel displays "Device OK" (B), software control is ready.
   2. Expand the control panel by clicking the arrow on its right edge.

X ray Gun Control Panel

7. Select 15W from the Spot/Power list in the X-Ray Gun Control panel (C).
8. Monitor the main chamber pressure.
9. Press the Apply button (D). The gun ramping up procedure will start. Wait for the "Device OK" (B) message and monitor the pressure, which should remain below 5x10^-9 mbar. (Initial pressure spikes up to 1x10^-8 mbar mbar are normal.)
10. Once the pressure stabilizes (decreases), gradually increase the power to 100W, 200W, and finally 300W.
11. Wait at least 10 minutes for X-ray intensity to stabilize.